Improvement in stove-grates



PHILLIPS 6L. JOHNSON.

Stove Grate.

Patented Sept. 29,1863.

Witness s:

UNITED STATES PATENT OFFICE.

GEORGE H. PHILLIPS AND WILLIAM H. JOHNSON, OF TROY, ASSIGNORS TO ANSONINGRAHAM, OF CENTER CAMBRIDGE, GEORGE H. PHILLIPS, AFORESAID, AND WM. H.INGRAHAM, OF TROY, NEW YORK.

lM PROVEMENT IN STOVE-GRATES.

Specification forming part of Letters Patent- No. 40,146, datedSeptember 29, 1863.

To all whom it may concern:

Be it known that we, GEORGE H. PHIL- LIPS and WILLIAM H. J OHNSON, eachof the city of Troy, in the county of- Rensselaer and State of New York,have jointly invented certain new and useful Improvements in the Gratesof Stoves or Furnaces, of which invention the following embraces asufficient description, reference being had to the annexed drawings, inwhich-- Figure 1 is a top view, Fig. 2 a bottom view, Fig. 3 a sectionalfront view, Fig. 4 a vertical section at or about the line 2 z in theother figures, and Fig. 5 a perspective View of a detached part, all ofa portion of astove or furnace embodying our improvements, like partsbeing marked by the same letters in all the figures, and theirdirections of motion indicated by the arrows thereon.

Our improvedstove or furnace grate belongs to that class in which thegrate A can be vibrated horizontally about its center to agitate burningcoal on the grate and sift out ashes therefrom, and also rocked ortilted into an inclined or vertical position to dump refuse coal andcinders off from the grate, all by simply vibrating horizontally androcking or turning one, 0, of two opposite or nearly opposite shanks orjournals, I) c, which are fast on the grate and directly support thelatter. Stove-grates of that class have been heretofore made with bothof the said grate-shanks supported and held laterally by a ring whichimmediately surrounded the grate, and which was mounted on an annular oropen base, so as to be turned horizontally back and forth thereon withand by the grate, thus securing an even horizontal vibrating movement tothe grate about its center and an unobstructed space immediately underthe grate, as shown in W. T. (Joggeshalls United States patent, datedOctober 20, 1857 but in that case the whole weight of the grate,together with the weight of the mass of burning coal thereon in use, wassustained entirely by the said movable ring around the grate, and bothof the supporting-bearings for the two grate-shanks, and also thebearings for the support of the said ring, were all greatly exposed tothe ashes and cinders which fell down from the fire, so that supporteddirectly upon two opposite elongated bearings fast on a fixed circularframe around and next to the grate, as shown in D. H. Nations UnitedStates patent, dated July 24, 1860 but in that case there was nothing toguide and make smooth and even the hori-' zontal movements of the grateabout its center, except the periphery of the grate or projectionsthereon striking and rubbing hard in spots, first against one side andthen across against the other side of the casin g around the grate, andall the bearing or rubbing surfaces were exposed to the heat and ashesfrom the fire, so that the grate worked altogether too hard and roughlyto be of much utility. Now, instead of having both of the shanks I c ofthe grate supported by a loose ring just out side of the grate, andinstead of supporting both of the grate-shanks upon two fixed elongatedbearings directly exposed to the heat and ashes from the fire on thegrate, we have, as a part of our invention, only one, I), Fig. 4, of thetwo shanks b c of the grate A supported by a ring, D, which surroundsthe grate, and is mounted so as to turn back and forth about its centeron an annular or suitable open base, E, and have the other grate shank,0, supported by a fixed elongated bearing, f, or a sliding one, j,separate from and outside of the said ring D, the latter being connectedby lateral bearings h h and t i, Fig. 5, to both of the grate-shanks b0, so that the ring D will be thereby turned with the grate A about itscen ter as the shank c is shaken horizontally. By

this construction we not only leave an entirely unobstructed spaceimmediately under the grate, and by means of the loose ring D secure aquite smooth and even horizontal movement of the grate about its center,but, in addition, relieve the said movable ring, which is exposed to theheat and ashes from the tire, of about one-half, or very much, of theweight of the grate and burning coal thereon, and.

also remove away from the heat'and ashes of the fire the bearing whichsupports the shank c, to which all the power is applied to operate thegrate, and thereby make the grate more easy to operate, especially asthe grate gradually becomes warped and burned out in use, than if bothof the grate-shanks were supported either by a loose ring around thegrate, or by two fixed elongated bearings close to the grate, with allthe bearings exposed to the heat and ashes from the burning coal.

Another part of our invention consists incover whatever changeableportion of the slot 76 is at any time left unoccupied by the said shankc, and thereby cover the unsightly parts inside, and either wholly ormostly prevent the escape of the gases and dust out through the saidslot from withinthe stove or furnace when in use, as well while thegrate is being vibrated holizontally with the ringD or tilted on itssupporting-shanksb c as when the grate is left stationary, and so thatthe said slide g will also, if required, support the grate-shank '0 whenstationary and in its rocking and vibrating movements, and thereby, inc0nnection with the ring D, serve to sustain the entire weight of thegrate and whatever coal or fuel shall be thereon.

In respect to this latter part of our invention, we merely present asnew the combination of a perforated slide and a slotted casing with theparticular above-described devices which we use in giving thehorizontally vibrating and rocking movements to the grate, the same asD. H. Nation in his abovementioned patent, and L. NV. Harwood in hisUnited States patent dated November 13,1860. Each claims the combinationof a perforated slide and slotted casing with the particular deviceswhich each describes for giving the tilting and horizontally-vibratingmovements to a lire-grate.

\Vhat we claim as new and ofour invention, and desire to secure byLetters Patent, is-

1. A fire-grate, A, having two shanks or journals, of which only one,I), is supported by a ring,D, surrounding the grate, and the other one,0, by a bearing separate from and outside of the said ring, the latterbeing mounted on an annular or open base, E, and connected with both ofthe said grate shanks by lateral bearings h h t i, substantially asherein set forth.

2. The combination of a perforated slide, g, andslotted casing L with agrate, A, having two supporting-shanks, b c, and a ring, I), mounted ona suitable open base, E, and provided with lateral bearings h h z' i forboth, and-a supporting-bearing, m, for only one of the saidgrate-shanks, substantially as herein described, with or \vithouta fixedgrate-shank bearing, f.

G. H. PHILLIPS. \V. H. JOHNSON.

Witnesses:

R. S. SHELDON, AUs'rrN F. PARK.

